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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>翻转数组</title>
    <script>
        // 利用函数翻转数组  reverse 翻转
        function reverse(arr) {
            var newArr = []
            for (var i = arr.length - 1;i >= 0;i--) {
                newArr[newArr.length] = arr[i]
            }
            return newArr
        }
        var arr1 = reverse([1,3,5,7,9])
        console.log(arr1);
        var arr2 = reverse([1,2,3,4,5,6,7,8])
        console.log(arr2);
    </script>
</head>
<body>
    
</body>
</html>